My CYA is 40. I've kept the pool at above 16 now for the duration except for day one. I've used DE four days running just not clearing up with any appreciative clarity. I've taken pics now of steps and vac on the bottom ... lol You'd think I was looking 40' down. My pool is only 4 feet deep. It's an Intex 16x32. Oh .. my total alkalinity is 100, the calcium is 110. Ph when I started was 7.3 and still is at 7.4. I've been using chlorine from the local hardware store 1000 gallon tank that supplies chlorine for beach homes and condos etc. It generally is a hot product at least 10 or 11 percent. What do I do? Heck with as much money as I've spent and water cost here in Pensacola Florida I should have drained the 15,000 gallons and cost me $45 buck to replace and start fresh. HOW DO I GET THIS POOL CLEAR? PLEASE? lol lol lol!